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Decimal / Gauge Conversion Chart

Conversion Chart
Measurements are in inches.

Decimal Equivalents & B.W.G. Gauges
30 .012
29 .013
28 .014
1/64 .0156
27 .016
26 .018
25 .020
24 .022
23 .025
22 .028
1/32 .0312
21 .032
20 .035
19 .042
3/64 .0468
18 .049
17 .058
1/16 .0625
16 .065
15 .072
5/64 .0781
14 .083
3/32 .0937
13 .095
12 .109
7/64 .1093
11 .120
1/8 .125
10 .134
9/64 .1406
9 .148
5/32 .1562
8 .165
11/64 .1718
7 .180
3/16 .1875
6 .203
13/64 .2031
7/32 .2187
5 .220
15/64 .2343
4 .238
1/4 .25
3 .259
17/64 .2656
9/32 .2812
2 .284
19/64 .2968
1 .300
5/16 .3125
21/64 .3281
0 .340
11/32 .3437
23/64 .3593
3/8 .375
25/64 .3906
13/32 .4062
27/64 .4218
7/16 .4375
29/64 .4531
15/32 .4687
31/64 .4843
1/2 .5
33/64 .5156
17/32 .5312
35/64 .5468
9/16 .5625
37/64 .5781
19/32 .5937
39/64 .6093
5/8 .625
41/64 .6406
21/32 .6562
63/64 .6718
11/16 .6875
45/64 .7031
23/32 .7187
47/64 .7343
3/4 .75
49/64 .7656
25/32 .7812
51/64 .7968
13/16 .8125
53/64 .8281
27/32 .8437
55/64 .8593
7/8 .875
57/64 .8906
29/32 .9062
59/64 .9218
15/16 .9375
61/64 .9531
31/32 .9687
63/64 .9843
1 1.0

Supplying the world AISI 4130 (E4130) and 4340 (E4340) Aircraft Quality Steel.
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